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L4962/A Fiches technique(PDF) 12 Page - STMicroelectronics

No de pièce L4962/A
Description  1.5A POWER SWITCHING REGULATOR
PDF  15 Pages
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Fabricant  STMICROELECTRONICS [STMicroelectronics]
Site Internet  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

L4962/A Fiches technique(HTML) 12 Page - STMicroelectronics

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MOUNTING INSTRUCTION
The Rth-j-amb of the L4962 can be reduced by
soldering the GND pins to a suitable copper area of
the printed circuit board (Fig. 32).
The diagram of figure 33 shows the Rth-j-amb as a
function of the side ”l” of two equal square copper
areas having the thickness of 35
µ (1.4 mils). During
soldering the pins temperature must not exceed
260
°C and the soldering time must not be longer
than 12 seconds.
The external heatsink or printed circuit copper are
must be connected to electrical ground.
Figure 32. Example of P.C. board copper area which is used
as heatsink
Figure 33. Maximum dissipable
power and junction to ambient
thermal resistance vs. side ”l”
L4962



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